Aang did what she did in a year

Aang had to learn all the forms of bending and master them in less than a year not counting all the distractions he had, korra had the best teachers in the world, years of training, zero distractions, yet still managed to be considered (Tarloks words not mime) a half baked avatar.

Aang No More Powerful than Korra

No, Avatar Aang is not more powerful than Avatar Korra as they are both the same soul living in different times. As the identity property describes a thing as being equal to itself, and Avatar Aang and Avatar Korra are the same soul, then Aang and Korra must be equally strong.